3-Chloro-4-methoxybenzylamine → Methyl 3-[4-(3-chloro-4-methoxybenzylamino)-benzothieno[2,3-d]pyrimidin-2-yl]propionate
反応式
Cl[C:2]1[C:3]2[C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=3[S:14][C:4]=2[N:5]=[C:6]([CH2:8][CH2:9][C:10]([O:12][CH3:13])=[O:11])[N:7]=1.[Cl:21][C:22]1[CH:23]=[C:24]([CH:27]=[CH:28][C:29]=1[O:30][CH3:31])[CH2:25][NH2:26]>CN1CCCC1=O>[Cl:21][C:22]1[CH:23]=[C:24]([CH:27]=[CH:28][C:29]=1[O:30][CH3:31])[CH2:25][NH:26][C:2]1[C:3]2[C:16]3[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=3[S:14][C:4]=2[N:5]=[C:6]([CH2:8][CH2:9][C:10]([O:12][CH3:13])=[O:11])[N:7]=1参加物
4
実験手順
Methyl 3-(4-chlorobenzothieno[2,3-d]pyrimidin-2-yl)propionate [obtainable by cyclization of methyl 2-amino-5,6,7,8-tetrahydrobenzothiophene-3-carboxylate with methyl 3-cyanopropionate, dehydrogenation with sulfur and subsequent chlorination with phosphorus oxychloride/dimethylamine] and 3-chloro-4-methoxybenzylamine (“A”) in N-methylpyrrolidone are stirred at 110° for 5 hours. The solvent is removed and the residue is worked up in the customary manner. Methyl 3-[4-(3-chloro-4-methoxybenzylamino)benzothieno-[2,3-d]pyrimidin-2-yl]propionate is obtained as a colourless oil.